MD 0563 CONCERNING TORNADO WATCH 147… FOR PORTIONS OF CENTRAL OKLAHOMA
Mesoscale Discussion 0563
NWS Storm Prediction Center Norman OK
0611 PM CDT Wed Apr 19 2023
Areas affected...Portions of central Oklahoma
Concerning...Tornado Watch 147...
Valid 192311Z - 200045Z
The severe weather threat for Tornado Watch 147 continues.
SUMMARY...A threat for large hail continues along the I-44 corridor
in central Oklahoma this evening. The tornado threat is expected to
increase this evening.
DISCUSSION...Several supercells have developed in southwest and
central Oklahoma early this evening. Multiple splitting supercells
have been observed thus far, with primarily a large hail threat with
hail as large as 2.25 inch reported. Even larger hail is possible as
these supercells mature this evening.
The KOUN VWP has shown gradually increasing low-level flow with
around 40 knots at around 1km at 2243Z. In addition, low-level flow
has backed substantially across central Oklahoma, in response to a
region of pressure falls southwest of Oklahoma City, observed by the
Oklahoma Mesonet. This has increased 0-1 SRH to around 250-300
m2/s2. As the low-level jet continues to strengthen and low-level
flow backs further (per high resolution guidance), the tornado
threat will increase in the 7-9 pm timeframe. A strong tornado is
possible given maturing supercells and increasing low-level shear.
..Bentley.. 04/19/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...TSA...OUN...
LAT...LON 34729882 34799888 35029886 35379873 35529843 35909782
36229688 36249657 36039630 35769622 35509633 34859707
34639794 34639866 34729882
